Great post. You can never be too safe. Some of my rules are to use a long type wooden match to somewhat preheat the generator, always light the lantern outdoors or near an exit, never use old fuel, never light a lantern on top or close to anything that can catch fire easily and be ready to simply turn the fuel valve 1/4 turn to the right if it flames up too much, understand that the generator must get hot before it generates vapour instead of raw fuel, watch for leaking fuel after attempting to light a lantern, put your thumb over the pump handle when pushed down to see if it pushes back up releasing air because of a leaking check valve, tighten the pump handle after pumping to prevent the check valve from leaking, understand the generator might be plugged and understand that the air vent having a spider web inside of it can cause flame ups and always make sure the fuel cap is tight. A lantern can be pumped up without fuel to test it. Open the valves and listen for air coming out. If it doesn't, you have a problem. If it does you can put it under water and check for air leaks, which would leak air or fuel. Here is how I air test lanterns without fuel. https://www.youtube.com/watch?v=jq9PK6X0Xak
I'm smart and safety oriented, but I did not know many of the things we have listed when I started collecting. That is the great thing about a forum like this. Information can be shared.